Deleting Inquiries

I know that inquiries is one of the toughest to remove when we go directly to the credit bureaus, however, we still have our rights as a consumer and that is why I am asking for members' advice on how to further proceed in removing these hard inquiries. I have gone to the extent of researching the bank addresses and will probably go thru planetfeedback for my letters.
Kindly suggest your opinion on this, does anyone have a sample letter that I can send to these companies who pulled my file without permissible purpose? Appreciate it.